Home / 389,516.32-584,339.04-136,731.20

Finding the Fourth Proportional to 389,516.32, 584,339.04 and 136,731.20

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Solution

The fourth proportional to 389,516.32, 584,339.04 and 136,731.20 is: 205,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,516.32 : 584,339.04 = 136,731.20 : x
  2. Step 2: Convert to fraction form
    389,516.32/584,339.04 = 136,731.20/x
  3. Step 3: Cross multiply
    389,516.32x = 584,339.04 × 136,731.20
  4. Step 4: Simplify right side
    389,516.32x = 79,897,378,146.05
  5. Step 5: Solve for x
    x = 79,897,378,146.05/389,516.32
  6. Step 6: Final answer
    x = 205,119.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.